圆管放样规(简称样规)是一种根据立体投影原理,直接在异形零件上画出它与圆管结合的结合线的工具。本文介绍的样规适用于画制中小型的相贯管件的结合线。现将样规的工作原理叙述如下。样规简图中,中心轴9与轴头14同心,并通过轴头14暂时与零件15(即待画结合线的零件)固定,固定可用点焊、夹具或磁力,依具体情况而定。心轴9与工件表面的倾斜角度,可从垂直量角器16读出。径向滑尺3垂直轴9并在十字接头12的槽内滑动。径向滑尺3另一端连到套在滑尺1的轴 Pipe lofting rules (referred to as the sample) is based on the principle of three-dimensional projection, directly on the special parts of the drawing of pipe and pipe combination of the combination of tools. This article describes the sample is suitable for drawing small and medium-sized pipe intersecting the line. Now the working principle of the sample is described below. In the simplified drawing, the central shaft 9 is concentric with the shaft head 14, and is temporarily fixed with the part 15 (that is, the part to be combined with the shaft) through the shaft head 14 and is fixedly applicable to spot welding, clamps or magnetic force as the case may be. The angle of inclination of the mandrel 9 from the surface of the workpiece can be read from the vertical protractor 16. The radial slide 3 is vertical to the shaft 9 and slides in the groove of the cross joint 12. The other end of the radial slide 3 is connected to the shaft of the slide 1